CVE-2017-3224

mediumpriority · track · 33OT risk · elevatedEPSS 0.011 · 65 %ileUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.06% (65th) EPSS

CVSS 4.3 · medium

Is it mine?

4 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

Open Shortest Path First (OSPF) protocol implementations may improperly determine Link State Advertisement (LSA) recency for LSAs with MaxSequenceNumber. According to RFC 2328 section 13.1, for two instances of the same LSA, recency is determined by first comparing sequence numbers, then checksums, and finally MaxAge. In a case where the sequence numbers are the same, the LSA with the larger checksum is considered more recent, and will not be flushed from the Link State Database (LSDB). Since the RFC does not explicitly state that the values of links carried by a LSA must be the same when prematurely aging a self-originating LSA with MaxSequenceNumber, it is possible in vulnerable OSPF implementations for an attacker to craft a LSA with MaxSequenceNumber and invalid links that will result in a larger checksum and thus a 'newer' LSA that will not be flushed from the LSDB. Propagation of the crafted LSA can result in the erasure or alteration of the routing tables of routers within the routing domain, creating a denial of service condition or the re-routing of traffic on the network. CVE-2017-3224 has been reserved for Quagga and downstream implementations (SUSE, openSUSE, and Red Hat packages).

cvss

Technical severity, 0–10. One row per scoring source.

8.2

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.3–8.2

v2.04.3mediumAV:A/AC:M/Au:N/C:N/I:P/A:Pprimary · NVD / NIST USexploitability 5.5 · impact 4.9

v3.08.2highCVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:Hprimary · NVD / NIST USexploitability 1.6 · impact 6

v3.07.5highCVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-345USprimaryCWE-354US

affected products (4)

Products and version ranges known to be affected.

quagga quaggaall versionsnvdUScpe:2.3:a:quagga:quagga:*:*:*:*:*:*:*:*
redhat package managerall versionsnvdUScpe:2.3:a:redhat:package_manager:*:*:*:*:*:*:*:*
suse opensuseall versionsnvdUScpe:2.3:o:suse:opensuse:*:*:*:*:*:*:*:*
suse suse linuxall versionsnvdUScpe:2.3:o:suse:suse_linux:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2018-07-24modified 2026-06-17

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+1444 more

references (4)

External citations — patches, advisories, analysis.

https://en.wikipedia.org/wiki/Open_Shortest_Path_FirstPatchcnnvd
https://www.kb.cert.org/vuls/id/793496 cnnvd
https://www.kb.cert.org/vuls/id/793496 enisa_euvd
https://www.kb.cert.org/vuls/id/793496Third Party AdvisoryUS Government Resourcenvd

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